How to send more than 31 bytes custom data for a gatt server by start an advertisement?

Question

I want to sent more than 31 bytes in an advertisement for a gatt server.
Is any api or parameter able to support this case?
here is the code demo:
Bluetooth::GenericAttributeProfile::GattServiceProvider->StartAdvertising(Bluetooth::GenericAttributeProfile::GattServiceProviderAdvertisingParameters());

Answer 1

Hello,
Welcome to Microsoft Q&A!

How to send more than 31 bytes custom data for a gatt server by start an advertisement?

Please use the following API:

1) To check if feature is supported on the system the App is running on: BluetoothAdapter.IsExtendedAdvertisingSupported Property (Windows.Devices.Bluetooth) - Windows UWP applications | Microsoft Learn
2) Enabling it: BluetoothLEAdvertisementPublisher.UseExtendedAdvertisement Property (Windows.Devices.Bluetooth.Advertisement) - Windows UWP applications | Microsoft Learn

Essentially, the app needs to dynamically verify if the system running the app has support for such a feature before enabling it.

Also, for the GATT server API, step 2 above should not be necessary as long as the feature is supported (checked via step 1)

Thank you.

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